<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <dl id="app">
      <dt>java</dt>
      <dd>javascript</dd>
      <dd>javaSE</dd>
  </dl>
  <script>
      let dl = document.getElementById('app');
  </script>
</body>
</html>